And when I came home on leave, he saw to it that

And when I came home on leave, he saw to it that I visited his office.
请详细分析一下此处的it 和that放在此处有什么用，十分感谢。
谢谢。

see to注意；负责；照料
see to it that 注意,务必,保证
it为形式宾语，指的后面的宾语从句 that I visited his office.
that为宾语从句的连接词，没有意义。
And when I came home on leave, he saw to it that I visited his office.我回家度假时，他留意我拜访他的办公室。

hhh

see to it 是个短语，意思是留意必定做…… 再看看别人怎么说的。

固定短语 see to，如果后面加宾语从句，一般先加 it 做其形式宾语，然后再加that引导的宾语（从句）。 see to it that... 的意思是“保证/确保...”。 再如： See to it that you are here punctually tomorrow. 明天你务必要准时到这里. 最后再次明确一下答案： it 是 see to 的（形式）宾语，而 that 是 see to 的宾语（从句）的引导词。

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